Bypass sub
US6263969A · kind A · utility
64Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1999 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Aug 4, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2592
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A bypass sub which will automatically bypass fluid flow in excess of a selected optimal flow rate for a downhole mud motor. A spring biased mandrel within a housing is driven downwardly by increased fluid flow, and driven upwardly by spring force upon decreased fluid flow, to control the alignment of a port in the mandrel with a bypass port in the housing, thereby maintaining a desired rate of fluid flow to the downhole motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.